Ah i hate that thing and still wish I could figure out how to get rid of it, but its the blinky, clipboard, free memory applet, etc window that startups from /usr/share/icewm/startup during boot. It should just open the progs to the tray but the first boot it opens a window also. Restarting X will make it right, usually I just right click the window and hit "hide", but this will make the blinky, etc disappear from the tray. But again a refresh of X will fix it. It only happens in IceWM. IF anyone knows how to keep this window from opening please let us know!

In the screenshot you provided in your initial post, it is impossible to tell exactly what that window is.
I am guessing that it is either blinky or the freememapplet,
take a look at the tray (the bar across the bottom or top of the screen) and see what is missing. (see example.png)

beaulanger wrote:

What should I change if mine looks like this?
............................................................................................

#!/bin/sh
# this script is executed by starticewm when IceWM starts
# TazOC 2009-6-19 based on earlier editions by MU, GuestToo